GB1066258A - Improved process for preparing crystalline zeolites - Google Patents
Improved process for preparing crystalline zeolitesInfo
- Publication number
- GB1066258A GB1066258A GB50147/64A GB5014764A GB1066258A GB 1066258 A GB1066258 A GB 1066258A GB 50147/64 A GB50147/64 A GB 50147/64A GB 5014764 A GB5014764 A GB 5014764A GB 1066258 A GB1066258 A GB 1066258A
- Authority
- GB
- United Kingdom
- Prior art keywords
- na2o
- sio2
- al2o3
- hours
- silica
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
- C01B33/28—Base exchange silicates, e.g. zeolites
- C01B33/2807—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures
- C01B33/2838—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures of faujasite type, or type X or Y (UNION CARBIDE trade names; correspond to GRACE's types Z-14 and Z-14HS, respectively)
- C01B33/2853—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures of faujasite type, or type X or Y (UNION CARBIDE trade names; correspond to GRACE's types Z-14 and Z-14HS, respectively) of type Y
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
- C01B33/28—Base exchange silicates, e.g. zeolites
- C01B33/2807—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures
- C01B33/2892—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures containing an element or a compound occluded in the pores of the network, e.g. an oxide already present in the starting reaction mixture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/21—Faujasite, e.g. X, Y, CZS-3, ECR-4, Z-14HS, VHP-R
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
A synthetic crystalline zeolite (faujasite, or Z-14HS zeolite) of formula Na2O:Al2O3:xSiO2 : nH2O where 3.2<x<6.0, and n\sF0 but <9, which has an effective pore size of <\>t13<\>rr176d is convertible into the hydrogen form without appreciable collapse of its crystal structure, is prepared from an aqueous mixture of sodium hydroxide, alumina and fine-sized silica, which has been previously calcined at 90-650 DEG C. for 0.1 to 72 hours, by ageing, and heating to between 50 DEG and 120 DEG C. to crystallize the faujasite. The molar proportions of the reactants are: Na2O/SiO2 = 0.17 to 1, SiO2/Al2O3 = 6 to 40, H2O/Na2O = 20 to 80. The silica is preferably calcined at 90-150 DEG C. until its water content is below 4.5% by weight, or at 155-650 DEG C. until its water content is 0.5 to 4.2%. Before calcination, the silica preferably has an average particle diameter of 0.01-10m . The reaction mixture may be made by mixing silica in water with a solution of alumina in sodium hydroxide by either the " slurry " process, in which the molar ratios of reactants are Na2O/SiO2 = 0.25 to 1 preferably 0.5, SiO2/Al2O3 = 10 to 40, e.g. <\>t20, H2O/Na2O = 20 to 80, e.g. <\>t40, or by the preferred "paste" process in which the molar reactant ratios are Na2O/SiO2 = 0.17 to 0.60, e.g. 0.3 to 0.36, SiO2/Al2O3 = 6 to 12, e.g. 8 to 10, H2O/Na2O = 25 to 75, e.g. 40. The mixture may be aged at 20-60 DEG C. for 3-300 hours, and then may be heated at 75-100 DEG C. for 3-72 hours, or at 90-110 DEG C. for 16-72 hours. The zeolite may then be converted to the hydrogen, alkali metal, alkaline earth metal, e.g. calcium or rare earth metal cation forms.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US337132A US3264059A (en) | 1964-01-13 | 1964-01-13 | Process for the preparation of synthetic faujasite |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1066258A true GB1066258A (en) | 1967-04-26 |
Family
ID=23319250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB50147/64A Expired GB1066258A (en) | 1964-01-13 | 1964-12-09 | Improved process for preparing crystalline zeolites |
Country Status (3)
Country | Link |
---|---|
US (1) | US3264059A (en) |
DE (1) | DE1293730B (en) |
GB (1) | GB1066258A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3374058A (en) * | 1964-12-08 | 1968-03-19 | Grace W R & Co | Process for preparing a crystalline zeolite |
US3428574A (en) * | 1965-12-03 | 1969-02-18 | Universal Oil Prod Co | Crystalline zeolite |
US5785944A (en) * | 1996-07-31 | 1998-07-28 | Chevron U.S.A. Inc. | Preparation of Y zeolite |
US8992884B2 (en) * | 2009-11-30 | 2015-03-31 | Chevron U.S.A. Inc. | Preparation of X zeolite |
US10329508B2 (en) | 2014-07-25 | 2019-06-25 | Hamilton Sundstrand Corporation | Fuel additive and method of preparing the same |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2924510A (en) * | 1956-12-24 | 1960-02-09 | Columbia Southern Chem Corp | Method of preparing pigments |
BE571380A (en) * | 1957-09-21 | |||
DE1106297B (en) * | 1958-01-02 | 1961-05-10 | Bayer Ag | Process for calcining silicic acid and silicate fillers obtained by precipitation |
US3059997A (en) * | 1958-12-18 | 1962-10-23 | Socony Mobil Oil Co Inc | Method for preparing siliceous aerogels |
US3081154A (en) * | 1959-11-17 | 1963-03-12 | Grace W R & Co | Process for preparing fine size silica |
US3130007A (en) * | 1961-05-12 | 1964-04-21 | Union Carbide Corp | Crystalline zeolite y |
-
1964
- 1964-01-13 US US337132A patent/US3264059A/en not_active Expired - Lifetime
- 1964-12-09 GB GB50147/64A patent/GB1066258A/en not_active Expired
- 1964-12-16 DE DEG42282A patent/DE1293730B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1293730B (en) | 1969-04-30 |
US3264059A (en) | 1966-08-02 |
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